Ecprepaulax

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Ecprepaulax
Immagine di Ecprepaulax mancante
Stato di conservazione
FossileTithoniano
Classificazione scientifica
DominioEukaryota
RegnoAnimalia
SottoregnoEumetazoa Bilateria
SuperphylumDeuterostomia
PhylumChordata
SubphylumVertebrata
InfraphylumGnathostomata
SuperclasseTetrapoda
(clade)Mammaliaformes
SuperordineAllotheria
OrdineMultituberculata
SottordinePlagiaulacida
FamigliaPinheirodontidae
GenereEcprepaulax
Nomenclatura binomiale
Ecprepaulax
Hahn & Hahn, 1999
Specie
E. anomala

Ecprepaulax è un genere di mammiferi estinti poco conosciuto. I resti fossili provengono dal Tithoniano del Portogallo, e sono limitati a pochi denti. Questi piccoli erbivori vissero durante l'era dei dinosauri. Gli Ecprepaulax sono membri dell'ordine dei multitubercolati e del sottordine 'plagiaulacida' (famiglia Pinheirodontidae). Sono quindi alcuni tra i più antichi rappresentanti dell'ordine.

La specie Ecprepaulax anomala venne classificata da G. Hahn e R. Hahn nel 1999. Inizialmente veniva considerata ascrivibile al Cretaceo inferiore (Berriasiano), ma studi successivi hanno rivelato l'appartenenza di questi strati al Giurassico superiore (Titoniano). L'unico campione consiste in un incisivo superiore (I2), che si distingue da quelli degli altri pinheirodonti per la presenza di un solco longitudinale che corre per l'intera lunghezza della corona ed è circondato da entrambi i lati da vari cuspidi (Kielan-Jaworowska et al., 2005), ritrovato negli strati della formazione di Porto Dinheiro, presso Lourinhã.

Tassonomia

Sottoclasse †Allotheria Marsh, 1880

Bibliografia

  • Hahn & Hahn (1999), "Pinheirodontidae n. fam. (Multituberculata) (Mammalia) aus der tiefen Unter-Kreide Portugals". Palaeontographica Abt. A Vol. 253, pp.77-222.
    (Pinheirodontidae n. fam. (Multituberculata) (Mammalia) dagli strati più profondi del Cretaceo inferiore del Portogallo).
  • Kielan-Jaworowska Z & Hurum JH (2001), "Phylogeny and Systematics of multituberculate mammals". Paleontology 44, p.389-429.
  • Zofia Kielan-Jaworowska, Richard L. Cifelli, Zhe-Xi Luo (2005). "Mammals from the age of dinosaurs : origins, evolution, and structure" p. 260-349. ISBN 0-231-11918-6

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